Water filter



H. GlEssEL WATER FILTER. A'PFLICATION FILED JULY 11,1921.

Patjeluyed Got.. 3l, 1922.

, j? Men?" @Zeasre/ Patented @ct 3i., 1922. i

HENRY einssnr, "or cnrcaeo, rnitrnors.

Applicatiomled July 11.,

To all whom 'it may concern: i

Be it known; that I, `Hinter Gruissan, a citizen of the United `States,residing.;l at Chicago, in'the county ofCookand State-ot illinois, haveinvented certain newfand usef ful improvements in Water Filters, ofwhich the following is a specication.`

My invention relates to improvements in water filters.` Itisparticularly adapted for use with water filters and coolers suchxasareused on railway. passenger cars, although it is not necessarily limitedto suchuse y@ne object of the invention'. is to provide an improvedconstruction whereby the lter casing may be more readilylremoved and thefilter stone more convenientlyreplaced than heretofore. Another'objectis to providexa generally improved construction.

ln the accompanying drawings I have` illustratcd one'embodiment ottheinvention` in which- Figure 1 is a vertical sectional elevation ofthe device; i i

Fig. 2 is a section taken onthe. line 2;-2 of Fig` 1;

Fig. 3 is a section taken on the line 3-3 of Fig. 1; and i Fig. 4 is asection taken on the line 4.-4 of Fig. 1.

Thestructure illustrated comprises a container consisting of twoseparable parts 1 and 2, having ianges 3 and 4 containing grooves whichreceive a suitable gasket 5, to render the container water-tight whenthe upper and lower parts are held together. The water to be iilteredenters through an inlet 6 and surrounds the filter stone 7 the latterhaving a hollow cylindrical center `8, in which the ltered watercollects after seeping through the stone. Metal disks or washers 9, 10are cemented into recesses at each end of the cylindrical stone filter.

A rod 11, made preferably of brass, is located within the hollow centerof the filter stone1 and is held in place by a screwthreaded extension12, which passes through an opening in the disk lO'andengages the upperpart of the rod. Said screw-threaded extension or stem 12 is provided`with a flange 13 and passes upwardly through an opening in the upperpart ofV the container 2, being provided with a handle 111 and a collar15 at its upper end.

To prevent leakage of water, I provide a rubber gasket 16, above which Iplace 'a metal washer 17 having side extensions i921. serial no.`483,645.

which are received withinnotches .18 within the circular flange 19.-'lhe metahwasher is thereby prevented from rotating andexerts a downwardpressure onthe rubber washer without tending to rotate it. Slidingcontact is provided between themetal washer 17 and f tween the metalwasher and said s:tem,.the

rubber being squeezed into this space-to some extent,.therebypreventingleakage of water.

The lower end of the rod `11 passes through aniopening in the lowerwasherif) and carries a nut` 20, which serves to clamp the filter stonein `position on therod. The` lower screw-threaded extremity 21 `engages1 a screw-threaded central boss 22, formed integrally with the base 1.kA radial opening 23 in the rod communicates ywith a longitudinal opening24` in `thelower partthereof, which .communicates Vwith the chamber inthe boss, an outlet pipe 25 leading from said chamber and passingthrough thevcasing, thereby permitting the filtered water to flow fromthehollow central chamberwithinlthe stone filter through said hollowoutlet pipe to the water cooler or elsewhere.

With the present construction, to remove the lilter stone it isnecessary merely to 'turn the handle 14 in a direction to unscrew thethreaded stem 12 from the rod 11, this action serving to force the upperhalf of the container 2 from the lower half 1, regardless of anytendency of the flanges 3 and 4t to stick to the rubber gasket 5. Whenthe stem is completely disengaged from the rod, the upper part of thecontainer is lifted o, leaving the filter stone projecting well abovethe lower part of the container 1, whereby it may be readily grasped bythe operator and rotated, thereby unscrewing the lower 21 from the boss22 and permitting quick substitution of a clean filter stone.

the

Stone filters require frequent renewal in order that the stone may becleaned and rendered sanitary, a clean stone being substituted for theone removed, in order that no time may be lost by the cleaningoperation.

Filters of the character kdescribed are usually located in an alcove inthe railway car, as a result of which there is little head room orclearance above the same, so that it has been both difficult andinconvenient to renew thefilter stone. Furthermore, the two parts of endthe containerhave been separated along a, horizontal plane near the topthereof, the parts being fastened together by clamping bolts. Afterremoving thesel boltsl the rubberv between the flanges would frequentlystick to said flanges, thereby making it nec essary to pry the upperflange away from the lower, after which the upper part of the container,which ywas practically a cover, could be lifted oil", but the operatorwould find that access'to the lilter stone was diflicult. With theconstruction described herein access to container comprising separableparts, a. filter stone carried by one of said parts, andmeans carried bythe other otsaid parts also engaging said filter stone for forcing onepart ot said container parts away fromthc other.

2.' In a device of the class described, a container comprising' upperand lower separable parts divided 'on a horizontal plane, a filterstone-structure mounted on said lower part, ascrew-threaded `membercarried by said upper, part and engaging said lilter stone structure,and means for rotating said screwethreadedmember vto lift said upperpart from said lower part.

3. A :filter structure comprising a separableicontainer having fawaterninlet and outlet, a hollow filter stone having itsl hollow portionclosedat the ends, means extending from one of said closures forengaging the lower part .of said container, means extending from theupper closure for engaging the upperI part of said container, and meanscausing a relative movement ofone part of said `container with referenceto said filter stone to aid in separating the parts of said container. jf i 4:. filter structure, comprising a base, a removable cover therefor,a gasket between said-base and cover, a ilterstone having screw-threaded`engagement with said base, and a member carried by said cover andengaging said filtery stone vto facilitate the removal. ofsaid cover,said filter stoneprojecting above' saidbaseto permit ready removalthereof. i

`,fl-'filter structure comprising a con tainer having a plurality ofseparable parte, a" filter stone within: the same, a lscrewthreaded rodpassing through one of said parts and engagingsaid ilter stone,conipressible washer. ,surrounding said rod, a metal `washer adjacentthereto, and means for preventing rotation of said metal washer.

6. `ln combination, acontainer, a hollow filter stone thereinhavinglmeans cemented thereto to close the ends thereof, means forsecuringsaid iilter'stone to the bottom of said container, and means forsecuring the top of said container to said filter stone.

In testimony whereof, I have subscribed my name. f

`HENRY GIESSEL.

